高等学校化学学报

高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (9): 1420.

• 论文 • 上一篇    下一篇

碱金属和稀土溴化物Meyer反应的相化学研究(Ⅱ)──CsBr-REBr3-13%HBr-H2O(RE=La,Pr,Nd,Sm)四元体系在25℃时的相图研究

王惠, 李亚红, 冉新权, 陈佩珩   

  1. 西北大学化学系, 西安 710069
  • 收稿日期:1996-08-27 出版日期:1997-09-24 发布日期:1997-09-24
  • 通讯作者: 王惠, 女, 35岁, 讲师.
  • 作者简介:王惠, 女, 35岁, 讲师.
  • 基金资助:

    国家自然科学基金

Studies on Phase Chemistry of Meyer's Reaction in Alkali Metal Bromide/Rare Earth Metal Tribromide Systems(Ⅱ)──A Study on Phase Diagrams of CsBr-REBr3-13%HBr──H2O Quaternary System(25℃, RE=La, Pr, Nd,Sm)

WANG Hui, LI Ya-Hong, RAN Xin-Quan, CHEN Pei-Yan   

  1. Department of Chemistry, Northwest University, Xi' an 710069
  • Received:1996-08-27 Online:1997-09-24 Published:1997-09-24

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摘要： 对CsBr－NdBr3－13％HBr－H2O四元体系25℃时的相平衡进行了研究, 比较CsBr与REBr3(RE=La, Pr, Nd, Sm)在氢溴酸介质中反应的相化学关系发现, 轻稀土的相似性和以Nd为界的"二分组效应"首次在相化学行为上有所体现.对化合物5CsBr·2REBr3·22H2O做了热分析测试.根据体系的相化学关系设计了新的固相反应, 并进行了新类型化合物的合成.

关键词: 四元体系, 轻稀土三溴化合物, 反应设计与合成, 溴化铯, 二分组效应

Abstract: Phase chemistry of CsBr-NdBr3-13%HBr──H2Oquaternary system at 25℃ wasstudied. The characteristics of the light rare earth compounds is very similar and the"bicomponent effect" of the light rare earth is very obvious by comparing the phase chemicalbehavior and the relation of these quaternary systems with each other. Meanwhile, a new solidreaction is designed according to the phase relation and new compounds are synthesizedaccording to the design.

Key words: Quaternary system, Light rare earth tribromide, Reaction design and synthesis, Cesium bromide, Bicomponent effect

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